1089161976 has 64 divisors (see below), whose sum is σ = 3130606080. Its totient is φ = 309317760.

The previous prime is 1089161951. The next prime is 1089161989. The reversal of 1089161976 is 6791619801.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8646 + ... + 47466.

It is an arithmetic number, because the mean of its divisors is an integer number (48915720).

Almost surely, 2^1089161976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089161976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1565303040).

1089161976 is an abundant number, since it is smaller than the sum of its proper divisors (2041444104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089161976 is a wasteful number, since it uses less digits than its factorization.

1089161976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39004 (or 39000 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 1089161976 is about 33002.4540905673. The cubic root of 1089161976 is about 1028.8786539704.

The spelling of 1089161976 in words is "one billion, eighty-nine million, one hundred sixty-one thousand, nine hundred seventy-six".